In the following guide you will learn how to unlock the iPhone 3G or iPod Touch 2G, powered by iOS 4.0.2, using a well-known software, called ultrasn0w. The latest version of this program can be still used for iOS 4.0.2, as the small update didn’t upgrade your baseband. Currently, this guide can only apply to the devices listed above, as other methods are not listed yet. After you have followed our steps bellow, you can use any SIM cards and any carriers, for free. visit http://www.geria.net/2010/09/02/how-to-use-iphone-ipad-on-nigeria-gsm-network/ to learn how

Informative!! there are many software available to unlock iphone and i unlocked it by remote unlocking, there are many online providers who provide the service, one of my friend got unlocked his iphone from Mobile-Unlocker by remote unlock, and the important thing remote unlocking is available for some country and network providers only so if you are interested you can try from them before that see whether remote unlocking is available for your country and provider,